function saveThumb() {
    $.ajaxFileUpload({
        url: "/adm/video/upload-video-thumb",
        secureuri: false,
        fileElementId: "upload_file",
        dataType: "json",
        data:{_token:$("#_token").val()},
        success: function(data, status) {
            if(data.success){
                $("#img_thumb").val(data.img_thumb);
                $("#thumb").attr("src", data.img_thumb);
                alert("添加成功");
            }else{
                alert(data.msg);}

        }
    })
}
